Cosmic Radio
NRAO (National Radio Astronomy Observatory)
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Cassiopeia
2 minutes
Posted Feb 25, 2008 at 12:00 am.
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In our Galaxy, about once every 100 years, a massive star ends its life in an enormous explosion. This explosion can outshine the full moon. While the light fades away in a matter of weeks, the gas continues to glow in radio waves.
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